TY - JOUR AU - V. A. Zhelnorovich TI - The variational principle and the equations of state for continuous media JO - Doklady Akademii Nauk PY - 1969 SP - 55 EP - 58 VL - 184 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1969_184_1_a13/ LA - ru ID - DAN_1969_184_1_a13 ER -